AR-2ax coil resitance question

[Guest ziradog]

I'm trying to troubleshoot this trivecta of AR-2ax's. Does anyone know what the resitance of the air-wound coils should be? The first one that I opened up read 0.2 ohms on my old analog meter. This is the speaker that fried my old Sony reciever when I originally hooked it up, and none of the other drivers are shorted (tweeter is an open circuit though). I hate to rebuild the crossover with a bad coil, but I als don't know the value of the coil to try to get a replacement so I would like to reuse this one. Any help/suggestions are appreciated.

[Guest dogmeninreno]

>I'm trying to troubleshoot this trivecta of AR-2ax's. Does

>anyone know what the resitance of the air-wound coils should

>be? The first one that I opened up read 0.2 ohms on my old

>analog meter. This is the speaker that fried my old Sony

>reciever when I originally hooked it up, and none of the other

>drivers are shorted (tweeter is an open circuit though). I

>hate to rebuild the crossover with a bad coil, but I als don't

>know the value of the coil to try to get a replacement so I

>would like to reuse this one. Any help/suggestions are

>appreciated.

Hello, I have always read a 5-6+ Ohm static DC reading on the driver you are referring to.. Dale

[RoyC]

The AR-2ax coil is either a #5 or #7 AR coil depending on the era. Hopefully one of those numbers is written on it to make it easy for you to identify. The earlier #5 is 1.2mh with resistance being around .5 ohms, while the later #7 is 1.88mh and .7 ohms.

It is very unusual for the coils to cause problems or be out of spec.

Roy

[Guest ziradog]

Thanks. I see no number on this one, but those readings make sense.

I didn't expect it to be bad, but something fried the power supply in the the reciever I was testing it with, and nothing else was shorted (the tweeter is open circit though).